Rolling walker



FIG. 1 is a front perspective view of a rolling walker;

FIG. 2 is a left elevation view thereof, the right elevation view being a mirror image thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown in the drawings depict portions of the rolling walker that form no part of the claimed design. 

CLAIM The ornamental design for a rolling walker, as shown and described. 